关于小程序:基于-Serverless-架构的头像漫画风处理小程序

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前言

我始终都想要有一个漫画版的头像,奈何手太笨,用了很多软件“捏不进去”,所以就在想着,是否能够基于 AI 实现这样一个性能,并部署到 Serverless 架构上让更多人来尝试应用呢?

后端我的项目

后端我的项目采纳业界鼎鼎有名的动漫格调转化滤镜库 AnimeGAN 的 v2 版本,成果大略如下:


对于这个模型的具体的信息,在这里不做具体的介绍和阐明。通过与 Python Web 框架联合,将 AI 模型通过接口对外裸露:

from PIL import Image
import io
import torch
import base64
import bottle
import random
import json

cacheDir = '/tmp/'
modelDir = './model/bryandlee_animegan2-pytorch_main'
getModel = lambda modelName: torch.hub.load(modelDir, "generator", pretrained=modelName, source='local')
models = {'celeba_distill': getModel('celeba_distill'),
    'face_paint_512_v1': getModel('face_paint_512_v1'),
    'face_paint_512_v2': getModel('face_paint_512_v2'),
    'paprika': getModel('paprika')
}
randomStr = lambda num=5: "".join(random.sample('abcdefghijklmnopqrstuvwxyz', num))
face2paint = torch.hub.load(modelDir, "face2paint", size=512, source='local')


@bottle.route('/images/comic_style', method='POST')
def getComicStyle():
    result = {}
    try:
        postData = json.loads(bottle.request.body.read().decode("utf-8"))
        style = postData.get("style", 'celeba_distill')
        image = postData.get("image")
        localName = randomStr(10)

        # 图片获取
        imagePath = cacheDir + localName
        with open(imagePath, 'wb') as f:
            f.write(base64.b64decode(image))

        # 内容预测
        model = models[style]
        imgAttr = Image.open(imagePath).convert("RGB")
        outAttr = face2paint(model, imgAttr)
        img_buffer = io.BytesIO()
        outAttr.save(img_buffer, format='JPEG')
        byte_data = img_buffer.getvalue()
        img_buffer.close()
        result["photo"] = 'data:image/jpg;base64, %s' % base64.b64encode(byte_data).decode()
    except Exception as e:
        print("ERROR:", e)
        result["error"] = True

    return result


app = bottle.default_app()
if __name__ == "__main__":
    bottle.run(host='localhost', port=8099)

整个代码是基于 Serverless 架构进行了局部改进的:

  1. 实例初始化的时候,进行模型的加载,曾经可能的缩小频繁的冷启动带来的影响状况;
  2. 在函数模式下,往往只有 /tmp 目录是可写的,所以图片会被缓存到 /tmp 目录下;
  3. 尽管说函数计算是“无状态”的,然而实际上也有复用的状况,所有数据在存储到 tmp 的时候进行了随机命名;
  4. 尽管局部云厂商反对二进制的文件上传,然而大部分的 Serverless 架构对二进制上传反对的并不敌对,所以这里仍旧采纳 Base64 上传的计划;

下面的代码,更多是和 AI 相干的,除此之外,还须要有一个获取模型列表,以及模型门路等相干信息的接口:

import bottle

@bottle.route('/system/styles', method='GET')
def styles():
    return {
      "AI 动漫风": {
        'color': 'red',
        'detailList': {
          "格调 1": {
            'uri': "images/comic_style",
            'name': 'celeba_distill',
            'color': 'orange',
            'preview': 'https://serverless-article-picture.oss-cn-hangzhou.aliyuncs.com/1647773808708_20220320105649389392.png'
          },
          "格调 2": {
            'uri': "images/comic_style",
            'name': 'face_paint_512_v1',
            'color': 'blue',
            'preview': 'https://serverless-article-picture.oss-cn-hangzhou.aliyuncs.com/1647773875279_20220320105756071508.png'
          },
          "格调 3": {
            'uri': "images/comic_style",
            'name': 'face_paint_512_v2',
            'color': 'pink',
            'preview': 'https://serverless-article-picture.oss-cn-hangzhou.aliyuncs.com/1647773926924_20220320105847286510.png'
          },
          "格调 4": {
            'uri': "images/comic_style",
            'name': 'paprika',
            'color': 'cyan',
            'preview': 'https://serverless-article-picture.oss-cn-hangzhou.aliyuncs.com/1647773976277_20220320105936594662.png'
          },
        }
      },
    }


app = bottle.default_app()
if __name__ == "__main__":
    bottle.run(host='localhost', port=8099)

能够看到,此时我的做法是,新增了一个函数作为新接口对外裸露,那么为什么不在刚刚的我的项目中,减少这样的一个接口呢?而是要多保护一个函数呢?

  1. AI 模型加载速度慢,如果把获取 AI 解决列表的接口集成进去,势必会影响该接口的性能;
  2. AI 模型所需配置的内存会比拟多,而获取 AI 解决列表的接口所须要的内存非常少,而内存会和计费有肯定的关系,所以离开有助于老本的升高;

对于第二个接口(获取 AI 解决列表的接口),相对来说是比较简单的,没什么问题,然而针对第一个 AI 模型的接口,就有比拟头疼的点:

  1. 模型所须要的依赖,可能波及到一些二进制编译的过程,所以导致无奈间接跨平台应用;
  2. 模型文件比拟大(单纯的 Pytorch 就超过 800M),函数计算的上传代码最多才 100M,所以这个我的项目无奈间接上传;

所以这里须要借助 Serverless Devs 我的项目来进行解决:

参考 https://www.serverless-devs.c… 实现 s.yaml 的编写:

edition: 1.0.0
name: start-ai
access: "default"

vars: # 全局变量
  region: cn-hangzhou
  service:
    name: ai
    nasConfig:                  # NAS 配置, 配置后 function 能够拜访指定 NAS
      userId: 10003             # userID, 默认为 10003
      groupId: 10003            # groupID, 默认为 10003
      mountPoints:              # 目录配置
        - serverAddr: 0fe764bf9d-kci94.cn-hangzhou.nas.aliyuncs.com # NAS 服务器地址
          nasDir: /python3
          fcDir: /mnt/python3
    vpcConfig:
      vpcId: vpc-bp1rmyncqxoagiyqnbcxk
      securityGroupId: sg-bp1dpxwusntfryekord6
      vswitchIds:
        - vsw-bp1wqgi5lptlmk8nk5yi0

services:
  image:
    component:  fc
    props: #  组件的属性值
      region: ${vars.region}
      service: ${vars.service}
      function:
        name: image_server
        description: 图片解决服务
        runtime: python3
        codeUri: ./
        ossBucket: temp-code-cn-hangzhou
        handler: index.app
        memorySize: 3072
        timeout: 300
        environmentVariables:
          PYTHONUSERBASE: /mnt/python3/python
      triggers:
        - name: httpTrigger
          type: http
          config:
            authType: anonymous
            methods:
              - GET
              - POST
              - PUT
      customDomains:
        - domainName: avatar.aialbum.net
          protocol: HTTP
          routeConfigs:
            - path: /*

而后进行:

1、依赖的装置:s build –use-docker
2、我的项目的部署:s deploy
3、在 NAS 中创立目录,上传依赖:

s nas command mkdir /mnt/python3/python
s nas upload -r 本地依赖门路 /mnt/python3/python

实现之后能够通过接口对我的项目进行测试。

另外,微信小程序须要 https 的后盾接口,所以这里还须要配置 https 相干的证书信息,此处不做开展。

小程序我的项目

小程序我的项目仍旧采纳 colorUi,整个我的项目就只有一个页面:

页面相干布局:

<scroll-view scroll-y class="scrollPage">
  <image src='/images/topbg.jpg' mode='widthFix' class='response'></image>

  <view class="cu-bar bg-white solid-bottom margin-top">
    <view class="action">
      <text class="cuIcon-title text-blue"></text> 第一步:抉择图片
    </view>
  </view>
  <view class="padding bg-white solid-bottom">
    <view class="flex">
      <view class="flex-sub bg-grey padding-sm margin-xs radius text-center" bindtap="chosePhoto"> 本地上传图片 </view>
      <view class="flex-sub bg-grey padding-sm margin-xs radius text-center" bindtap="getUserAvatar"> 获取以后头像 </view>
    </view>
  </view>
  <view class="padding bg-white" hidden="{{!userChosePhoho}}">
    <view class="images">
      <image src="{{userChosePhoho}}" mode="widthFix" bindtap="previewImage" bindlongpress="editImage" data-image="{{userChosePhoho}}"></image>
    </view>
    <view class="text-right padding-top text-gray">* 点击图片可预览,长按图片可编辑 </view>
  </view>

  <view class="cu-bar bg-white solid-bottom margin-top">
    <view class="action">
      <text class="cuIcon-title text-blue"></text> 第二步:抉择图片解决计划
    </view>
  </view>
  <view class="bg-white">
    <scroll-view scroll-x class="bg-white nav">
      <view class="flex text-center">
        <view class="cu-item flex-sub {{style==currentStyle?'text-orange cur':''}}"wx:for="{{styleList}}"wx:for-index="style"bindtap="changeStyle"data-style="{{style}}">
          {{style}}
        </view>
      </view>
    </scroll-view>
  </view>
  <view class="padding-sm bg-white solid-bottom">
    <view class="cu-avatar round xl bg-{{item.color}} margin-xs" wx:for="{{styleList[currentStyle].detailList}}"
      wx:for-index="substyle" bindtap="changeStyle" data-substyle="{{substyle}}" bindlongpress="showModal" data-target="Image"> 
      <view class="cu-tag badge cuIcon-check bg-grey" hidden="{{currentSubStyle == substyle ? false : true}}"></view>
      <text class="avatar-text">{{substyle}}</text>
    </view>
    <view class="text-right padding-top text-gray">* 长按格调圆圈能够预览模板成果 </view>
  </view>

  <view class="padding-sm bg-white solid-bottom">
    <button class="cu-btn block bg-blue margin-tb-sm lg" bindtap="getNewPhoto" disabled="{{!userChosePhoho}}"
      type="">{{userChosePhoho ? (getPhotoStatus ?'AI 将破费较长时间 ':' 生成图片 ') :' 请先抉择图片 ' }}</button>
  </view>

  <view class="cu-bar bg-white solid-bottom margin-top" hidden="{{!resultPhoto}}">
    <view class="action">
      <text class="cuIcon-title text-blue"></text> 生成后果
    </view>
  </view>
  <view class="padding-sm bg-white solid-bottom" hidden="{{!resultPhoto}}">
    <view wx:if="{{resultPhoto =='error'}}">
      <view class="text-center padding-top"> 服务临时不可用,请稍后重试 </view>
      <view class="text-center padding-top"> 或分割开发者微信:<text class="text-blue" data-data="zhihuiyushaiqi" bindtap="copyData">zhihuiyushaiqi</text></view>
    </view>
    <view wx:else>
      <view class="images">
        <image src="{{resultPhoto}}" mode="aspectFit" bindtap="previewImage" bindlongpress="saveImage" data-image="{{resultPhoto}}"></image>
      </view>
      <view class="text-right padding-top text-gray">* 点击图片可预览,长按图片可保留 </view>
    </view>
  </view>

  <view class="padding bg-white margin-top margin-bottom">
    <view class="text-center"> 骄傲的采纳 Serverless Devs 搭建 </view>
    <view class="text-center">Powered By Anycodes <text bindtap="showModal" class="text-cyan" data-target="Modal">{{"<"}} 作者的话 {{">"}}</text></view>
  </view>

  <view class="cu-modal {{modalName=='Modal'?'show':''}}">
  <view class="cu-dialog">
    <view class="cu-bar bg-white justify-end">
      <view class="content"> 作者的话 </view>
      <view class="action" bindtap="hideModal">
        <text class="cuIcon-close text-red"></text>
      </view>
    </view>
    <view class="padding-xl text-left">
      大家好,我是刘宇,很感谢您能够关注和应用这个小程序,这个小程序是我用业余时间做的一个头像生成小工具,基于“人工智障”技术,反正当初怎么看怎么顺当,然而我会致力让这小程序变得“智能”起来的。如果你有什么好的意见也欢送分割我 <text class="text-blue" data-data="service@52exe.cn" bindtap="copyData"> 邮箱 </text> 或者 <text class="text-blue" data-data="zhihuiyushaiqi" bindtap="copyData"> 微信 </text>,另外值得一提的是,本我的项目基于阿里云 Serverless 架构,通过 Serverless Devs 开发者工具建设。</view>
  </view>
</view>

<view class="cu-modal {{modalName=='Image'?'show':''}}">
  <view class="cu-dialog">
    <view class="bg-img" style="background-image: url("{{previewStyle}}");height:200px;">
      <view class="cu-bar justify-end text-white">
        <view class="action" bindtap="hideModal">
          <text class="cuIcon-close"></text>
        </view>
      </view>
    </view>
    <view class="cu-bar bg-white">
      <view class="action margin-0 flex-sub  solid-left" bindtap="hideModal"> 敞开预览 </view>
    </view>
  </view>
</view>

</scroll-view>

页面逻辑也是比较简单的:

// index.js
// 获取利用实例
const app = getApp()

Page({
  data: {styleList: {},
    currentStyle: "动漫风",
    currentSubStyle: "v1 模型",
    userChosePhoho: undefined,
    resultPhoto: undefined,
    previewStyle: undefined,
    getPhotoStatus: false
  },
  // 事件处理函数
  bindViewTap() {
    wx.navigateTo({url: '../logs/logs'})
  },
  onLoad() {
    const that = this
    wx.showLoading({title: '加载中',})
    app.doRequest(`system/styles`, {}, option = {method: "GET"}).then(function (result) {wx.hideLoading()
      that.setData({
        styleList: result,
        currentStyle: Object.keys(result)[0],
        currentSubStyle: Object.keys(result[Object.keys(result)[0]].detailList)[0],
      })
    })
  },

  changeStyle(attr) {
    this.setData({
      "currentStyle": attr.currentTarget.dataset.style || this.data.currentStyle,
      "currentSubStyle": attr.currentTarget.dataset.substyle || Object.keys(this.data.styleList[attr.currentTarget.dataset.style].detailList)[0]
    })
  },

  chosePhoto() {
    const that = this
    wx.chooseImage({
      count: 1,
      sizeType: ['compressed'],
      sourceType: ['album', 'camera'],
      complete(res) {
        that.setData({userChosePhoho: res.tempFilePaths[0],
          resultPhoto: undefined
        })
      }
    })

  },

  headimgHD(imageUrl) {imageUrl = imageUrl.split('/'); // 把头像的门路切成数组
    // 把大小数值为 46 || 64 || 96 || 132 的转换为 0
    if (imageUrl[imageUrl.length - 1] && (imageUrl[imageUrl.length - 1] == 46 || imageUrl[imageUrl.length - 1] == 64 || imageUrl[imageUrl.length - 1] == 96 || imageUrl[imageUrl.length - 1] == 132)) {imageUrl[imageUrl.length - 1] = 0;
    }
    imageUrl = imageUrl.join('/'); // 从新拼接为字符串
    return imageUrl;
  },

  getUserAvatar() {
    const that = this
    wx.getUserProfile({
      desc: "获取您的头像",
      success(res) {const newAvatar = that.headimgHD(res.userInfo.avatarUrl)
        wx.getImageInfo({
          src: newAvatar,
          success(res) {
            that.setData({
                    userChosePhoho: res.path,
                    resultPhoto: undefined
                  })
          }
        })

      }
    })
  },

  previewImage(e) {
    wx.previewImage({urls: [e.currentTarget.dataset.image]
    })
  },

  editImage() {
    const that = this
    wx.editImage({
      src: this.data.userChosePhoho,
      success(res) {
        that.setData({userChosePhoho: res.tempFilePath})
      }
    })
  },

  getNewPhoto() {
    const that = this
    wx.showLoading({title: '图片生成中',})
    this.setData({getPhotoStatus: true})
    app.doRequest(this.data.styleList[this.data.currentStyle].detailList[this.data.currentSubStyle].uri, {style: this.data.styleList[this.data.currentStyle].detailList[this.data.currentSubStyle].name,
      image: wx.getFileSystemManager().readFileSync(this.data.userChosePhoho, "base64")
    }, option = {method: "POST"}).then(function (result) {wx.hideLoading()
      that.setData({
        resultPhoto: result.error ? "error" : result.photo,
        getPhotoStatus: false
      })
    })
  },
  saveImage() {
    wx.saveImageToPhotosAlbum({
      filePath: this.data.resultPhoto,
      success(res) {
        wx.showToast({title: "保留胜利"})
      },
      fail(res) {
        wx.showToast({title: "异样,稍后重试"})
      }
    })
  },
  onShareAppMessage: function () {
    return {title: "有条有理个性头像",}
  },
  onShareTimeline() {
    return {title: "有条有理个性头像",}
  },
  showModal(e) {if(e.currentTarget.dataset.target=="Image"){
      const previewSubStyle = e.currentTarget.dataset.substyle
      const previewSubStyleUrl = this.data.styleList[this.data.currentStyle].detailList[previewSubStyle].preview
      if(previewSubStyleUrl){
        this.setData({previewStyle: previewSubStyleUrl})
      }else{
        wx.showToast({
          title: "暂无模板预览",
          icon: "error"
        })
        return 
      }
    }
    this.setData({modalName: e.currentTarget.dataset.target})
  },
  hideModal(e) {
    this.setData({modalName: null})
  },
  copyData(e) {
    wx.setClipboardData({
      data: e.currentTarget.dataset.data,
      success(res) {
        wx.showModal({
          title: '复制实现',
          content: ` 已将 ${e.currentTarget.dataset.data} 复制到了剪切板 `,
        })

      }
    })
  },
})

因为我的项目会申请比拟屡次的后盾接口,所以,我将申请办法进行额定的形象:

// 对立申请接口
  doRequest: async function (uri, data, option) {
    const that = this
    return new Promise((resolve, reject) => {
      wx.request({
        url: that.url + uri,
        data: data,
        header: {"Content-Type": 'application/json',},
        method: option && option.method ? option.method : "POST",
        success: function (res) {resolve(res.data)
        },
        fail: function (res) {reject(null)
        }
      })
    })
  }

实现之后配置一下后盾接口,公布审核即可。

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